Could I be held personally liable for a debt that's technically my business's?

You could be, but only under two specific circumstances. First, if you personally signed a personal guarantee, a separate written promise making yourself personally responsible for the business's obligation, at some point during the underlying transaction, commonly found buried inside credit applications that business owners sign without close attention. Second, if the plaintiff can successfully argue what's called piercing the corporate veil, essentially proving your business wasn't actually maintained as a genuinely separate legal entity from your personal finances, through commingled bank accounts or improper formation.

Reviewing the underlying lease and any credit application you signed when originally opening the account with this vendor or landlord is an essential early step, since personal guarantee language is frequently included in dense boilerplate that business owners never carefully read, and many only discover its existence once they're already being personally named in a lawsuit.